Justification:
Listed as Least Concern in view of its wide distribution, presumed large population, occurrence in a number of protected areas, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.

This species is found in the U.S. and Mexico. In the U.S. it is found in south-eastern Utah, south and west Colorado, extreme south-eastern Wyoming, west and central New Mexico, and Arizona (USA); in Mexico, it occurs in Chihuahua, Durango, and Sonora (Mexico). There are also introduced populations in many other locations in Arizona, New Mexico, and Utah.